Energy storage properties of (Bi0.5Na0.5)0.93Ba0.07TiO3 lead-free ceramics modified by La and Zr co-doping

Journal of Materiomics

YangYang Zhao¹  Hua Wang¹  Ling Yang¹  Changlai Yuan¹  Qingning Li¹  Xiaopeng Lu¹  Changrong Zhou¹  Jiwen Xu¹  Guohua Chen¹ 

[1] Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China;

关键词: BNT-BT;    Energy storage;    Co-doping;    Ferroelectric;    Ceramic;   

DOI  :  10.1016/j.jmat.2016.02.001

来源: DOAJ

【 摘 要 】

Lead-free [(Bi0.5Na0.5)0.93Ba0.07]1-xLaxTi1-yZryO3 (BNBLTZ) ceramics were investigated for energy storage applications. In order to adjust its energy storage properties, the La and Zr co-doping contents varied at 0.01 ≤ x, y ≤ 0.04. BNBLTZ ceramics show a single phase perovskite structure without phase transition after La and Zr co-doping. The compact and uniform microstructure with similar grain morphology and different grain sizes is obtained. The remnant polarization and coercive field decrease with the increase of La and Zr additions, and the energy storage density increases drastically. The maximum energy storage density of 1.21 J/cm3 is obtained when x = 0.04 and y = 0.01. There are two dielectric anomalies at Tp and Tm due to the phase transformation. The results suggest that lead-free BNBLTZ ceramics should be good candidates for energy storage applications.

【 授权许可】

Unknown